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1
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
The photon of hard gamma radiation knocks a proton out of $${}_{12}^{24}Mg$$ nucleus to form
A
the isotope of parent nucleus
B
the isobar of parent nucleus
C
the nuclide $${}_{11}^{23}Na$$
D
the isobar of $${}_{11}^{23}Na$$
2
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
A reaction involving two different reactants can never be
A
Unimolecular reaction
B
First order reaction
C
second order reaction
D
Bimolecular reaction
3
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
Hydrogen bomb is based on the principle of
A
Nuclear fission
B
Natural radioactivity
C
Nuclear fusion
D
Artificial radioactivity
4
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
In a first order reaction, the concentration of the reactant decreases from 0.8 M to 0.4 M in 15 minutes. The time taken for the concentration to change from 0.1 M to 0.025 M is
A
30 minutes
B
60 minutes
C
7.5 minutes
D
15 minutes
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